Is predicted to encode a protein with the following domains: Tissue inhibitor of metalloproteinases-like, OB-fold; Frizzled/secreted frizzled-related protein; Frizzled cysteine-rich domain superfamily; Secreted frizzled-related protein 1; UNC-6/NTR/C345C module; Netrin module, non-TIMP type; Fz domain; and Frizzled domain. Is an ortholog of C. elegans sfrp-1.